Electric water heater



March 10, 1936. J. MOSES ELECTRIC WATER HEATER Filed DSG. 26, 1934Inventor Patented Mar. 10, 1936 UNITED STATES PATENT OFFICE 1 Claim.

This invention relates to electric water heaters wherein the electricheating element is of th immersion type.

One of the objects of the invention is to provide a heater that may beconveniently hung in the basement of a building or any place where apermanent heater for larger amounts of water would be too costly toinstall and operate.

Another object of the invention is to provide a heater that isparticularly adapted for shower baths because it will not circulate morethan half of the water and the temperature of the water will be governedby the ow.

Another feature of the invention is to make a simple, economicalelectric water heater which is comparatively cheap in rst cost ofinstallation and also for economic operation of the shower bath.

A still further object of the invention is the construction of animmersion heater whereby the water travels directly by the immersionheating element to the outlet thereby using the natural force of the hotwater, current going upwards.

With the foregoing and other objects in view the invention consists of anovel construction, combination and arrangement of parts as will behereinafter more specifically described and illustrated in theaccompanying specification and drawing, wherein is shown the preferredembodiment of the invention, but it is to be understood that changes,variations, and modications may be resorted to, without departing fromthe spirit of the claims hereunto appended.

In the drawing wherein like reference characters denote correspondingparts throughout the several views:

Figure 1 is a detailed vertical section through the electric immersionwater heater constructed in accordance with the present invention.

Figure 2 is a horizontal section taken substantially on line 2 2 ofFigure 1.

Referring to the drawing in detail, 5 indicates a cylindrical casinghaving a closed top wall 6 and a closed bottom wall 'I thereby providingthe lateral, large water chamber 8. Mounted in the bottom wall I is afemale hose connection 9 whereby water may be supplied to the chamber 8through a hose (not shown). The inlet nipple is indicated at I0 and ismounted in the bottom wall 'I on the outer end of which is the femalehose connection 9. The upper end of the nipple I0 has an upwardlyopening check valve Il so that water will not escape from the chamber 8when the hose is disconnected. On the side (Cl. 21S-39) of the tank 5are a pair of hooks I2 by which the tank is supported on suitablebrackets. A clean-out plug I3 is mounted in the top wall.

The inner sleeve I4 is secured to the top wall 6 thereby providing aninner water compartment 5 I5. The lower end of the inner sleeve I4terminates slightly above the bottom wall 'I. The bottom of the outersleeve I6 is secured to the bottom wall 'I by the flange I'I and in thecenter of the flange is a threaded opening in which is 10 mounted thering collar I8 which carries the immersion heating element to bepresently described. The outer sleeve I6 overlaps about one half of thelower end of the inner sleeve I4. The space I9 between the inner andouter sleeve 15 furnishes a second water compartment. The outer sleeveI6 lies substantially on the same axis as the inner sleeve I4. Adjacentthe top wall of the casing 6, the inner sleeve I4 is provided with aseries of ports 20 and these ports are above 20 the upper end of theouter sleeve I6.

Through the top wall 6 and the bottom wall of the sleeve I4 is anopening 2I in which is mounted an upstanding nozzle 22 which may beconnected with a shower bath hose. Mounted 25 in the collar I8 are theends of an elongated U- shaped immersion electric heating element 23,the upper end of which terminates slightly below the ports 20 and thisheating element is substantially co-extensive with the inner and outer30 water compartments I5 and I9 respectively. Connected with the heatingelement 23 is the time switch 24 that controls the flow of electricityto the heating element so that it will be impossible to boil the wateraway and thus ruin 35 the heating element.

The path of flow in this water heater is from the outer chamber 8 downthe outer water compartment I9 then up through the inner watercompartment I5 passing directly by and around 40 the immersion heatingelement 23 and then out through the nozzle 22. Ihis path is the naturalpath for the water and promotes maximum efciency. The ports 20 in thetop of the inner sleeve I4 allows circulation down to the level of 45the outer tube which will accommodate the difference in the timerequired by one person to another in getting ready to use the showerbath without wasting or overheating or boiling away the water, and thewater will be tempered. 50

Some ordinances may require grounding my water heater, and in thefurtherance of safety I provide a suitable ground indicated at 2B andrun an electric conductor 25 from the ground to the casing and forconvenience of illustration 55 I show the conductor attached to theclean out plug I3.

Having described my invention, what I claim as new is:

An electric Water heater comprising a casing formed with a Waterchamber, a sleeve having apertures at the top thereof and secured to thetop Wall of the casing and terminating short of the bottom wall therebyproviding a separate water compartment, an electric immersion heatingelement in the separate compartment substantially co-extensive with thelength thereof, a second sleeve greater in diameter than the rstmentoned sleeve secured to the bottom Wall and surrounding the firstmentioned sleeve to substantially its mid point thereof, therebyproviding a separate Water compartment around the rst mentioned separatecompartment, said casing having an inlet in the Water compartment and anoutlet in the top of the rst mentioned compartment.

JOHN MOSES.

